About this item Adjustable Feature: Fully adjustable rollers provide smooth and secure sliding. The bearings provide a very quiet and smooth glide as the door opens and closes. Adjustable double rollers to accommodate thinner panel. Practical Feature: The sliding door guide can be used with 3 inch thick doors, suitable for all door brands of barn. Countersunk screw design to make our floor guide rest on the floor, with no gap between the bracket and the floor, ensuring no damage to the floor. Easy to install: This floor guide is easy to install. Just fix 2 screws on the bottom plate, adjust and tighten. Our floor guide is made of carbon steel and perfectly formed to provide a flush fit with the wall and the floor. Convenient to use: The door guides built-in bearing allows for an ultra-smooth rolling , easy to use. Unique design: carbon steel frame with black surface of the holding roller, screw adaptation for maximum durability. If you really need a quality functional door guide, the ball bearing wheels are smooth and quiet.